Transferrer



TRANSFERRER Filed July 19, 1939 I 1 1:9? 4. INVENTOR. MLL/Afl E zu/vo GEEN.

ATTORNEY.

Patented Nov. 14, 1939 TRANSFERRER.

William Edward. Lundgren, Hopedale, Mass, as-

signor to Draper Corporation, Hopedale, Mass,

a corporation of Maine Application July 19, 1939, Serial No. 285,252

3 Claims.

The present invention pertains to bobbin changing mechanism for automatic bobbin changing looms and more particularly relates to the construction of the bobbin transferrers of such mechanisms.

The usual bobbin changing mechanism for looms includes a hop-per for holding a reserve supply of bobbins and a transferrer member for transferring the reserve bobbins to the loom shuttle as required. The transferrer commonly comprises a pivoted member having a head which includes a striking surface for engaging the butt of the bobbin during transfer and a supplemental bobbin-engaging member commonly in the form of a tip-engaging fork. The said striking surface of the transferrer engages hardened steel rings on the bobbin butt and eventually becomes worn to the extent that the transferrer will not operate properly. In the usual prior construction, the transferrer has the head and striking face formed integrally with the rearwardly extending arm of the main body member of the transferrer, so that when such face becomes worn the entire body member must be discarded.

A principal object of the present invention is to provide a transferrer comprising a body portion, a detachable piece having formed thereon the aforesaid striking surface for engaging the butt of the bobbin, a supplemental bobbinengaging member as aforesaid, and means carried by such supplemental member for detachably clamping the detachable piece to the body portion of the transferrer.

The foregoing and other objects of the invention are accomplished in the construction illustrated on the accompanying drawing, of which:

Fig. 1 is a fragmentary view, partly in section and partly in elevation, of bobbin changing mechanism having the preferred embodiment of my improved transierrer. applied thereto;

Fig. 2 is a View in perspective of one end of the body portion of said transferrer;

Fig. 3 is a View in perspective of the detachable piece of the transferrer; and

Fig. 4 is plan View, partly in section, of the rearward end of the transferrer.

The bobbin changing mechanism shown on the drawing, except for the improved transferrer, is of conventional construction and is accordingly but fragmentarily illustrated. Such mechanism includes a hopper for holding reserve bobbins, of which hopper the drawing shows a disc I rotatably mounted on a stud 2 and having pockets 3 for receiving the butts of reserve bobbins 4, the tips of the bobbins being supported by another disc, not shown. The hopper is rotated, to successively present the bobbins in transferring position adjacent a guide 5, by a suitable pawl 6 engaging a ratchet wheel 7. The hopper carries the usual fixed stud 8 on which the trans- 5 ferrer to be described is pivoted.

The transferrer shown includes a relatively large main or body portion consisting of a depending arm 9 and a rearwardly extending arm I0 integrally joined with a hub portion I I which 10 engages the stud 8. The rearward or free end of the arm Ill is located over the bobbin 4 in transferring position and is provided with a head I2. In the present construction, the head I2 consists simply of the end portion of the arm I0 15 and a laterally extending flange as shown. The transferrer further includes a detachable piece I3 for engaging the butt of the bobbin during transfer and a suitable supplemental bobbin-engaging member such as the fork member I4. 0

The rearward or head end of the arm Ill has a substantially flat, horizontal lower face I5 and a vertical side face 6. The striking piece I3 has. an upper surface I! which fits against the face I5 and also has on its lower side a striking sur- 5 face I8 for engaging the butt of a bobbin during transfer. The surface I! is substantially flat, while the striking surface I8 is curved the same as similar surfaces heretofore formed directly on the body portion of the transferrer. The piece 30 I4 must be firmly but detachably secured to the arm It and the securing means must be confined within the limited space available. To this end, I prefer to utilize attaching means carried by the supplemental member It.

In the particular embodiment shown, the arm ID has a boss I9 which projects laterally from the vertical face I6 and the member I4 is threaded into threads in a bore in this boss. The member 54 is thereby fixed in the arm I I] and 40 extends laterally thereof as usual. The striking piece I3 has an upwardly extending portion provided with a surface 20 which engages the face It of the arm II]. A nut 2| threaded onto the member I4 is utilized to clamp the striking piece 45 against the surface I 6. To this end, the said upwardly extending portion of the striking piece is provided with an aperture 22 which fits over the boss i9 and a flange 23 around the aperture extends far enough beyond the boss to be 50 engaged by the nut 2|.

The angularly related surfaces l1 and 20 on the striking piece I3 fit the similarly related surfaces I5 and I6 on the arm I0, so that the striking piece is held against any possibility of move- 55' ment. The boss l9, engaging in the aperture 22, further holds the striking piece and accurately positions the latter. Accordingly, no further clamping means than the nut 21 are required. The striking piece is quickly and easily detached by merely loosening the nut 2| and unscrewing the member l4, Wherefore the striking piece may be replaced when worn. Furthermore, the complete transferrer is no larger than prior one piece transferrers, whereby it may enter down into the shuttle (not shown) during transfer, and will not interfere with other parts of existing looms.

Having fully disclosed the preferred embodiment of my invention, I claim:

1. A transferrer comprising in combination, a body portion having a hub and a rearwardly extending arm, the rearward end of said arm having a horizontal lower face and a vertical side face, a detachable piece having an upper surface engaging said lower face on said transferrer and further having at its lower side a striking surface for engaging the butt of a bobbin during transfer, said piece extending upwardly in engagement with said vertical side face, a bobbin-engaging fork member fixed, in said arm and extending through said upwardly extending portion of said detachable piece, and means on said member for fixing said detachable piece to said arm.

2. A transferrer comprising in combination, a body portion having a hub and a rearwardly extending arm, the rearward end of said arm having a horizontal lower face and a vertical side face, a detachable piece having angularly related surfaces respectively engaging said horizontal and vertical faces of said arm, said detachable piece having at its lower side a striking surface for engaging the butt of a bobbin during transfer, said arm having a boss projecting laterally from its said vertical face and extending through an aperture in said detachable piece, and means detachably clamping said piece against said vertical face.

3. A transferrer comprising in combination, a body portion having a hub and a rearwardly ex tending arm, the rearward end of said arm having a horizontal lower face and a vertical side face, a detachable striking piece having angularly related surfaces respectively engaging said horizontal and vertical faces of said arm, said striking piece having at its lower side a striking surface for engaging the butt of a bobbin during transfer, said arm having a boss projecting laterally from said vertical face and engaging in an aperture in said striking piece, a bobbinengaging fork member fixed in said arm and extending through said boss, and a nut on said member, said nut engaging said striking piece and detachably clamping the latter against said vertical face of said arm.

WILLIAM E. LUNDGREN. 

